Entry 1 sense Webster, 1913 Malleolar · Mal·le·o·lar · IPA /məˈli.əl.ɚ/ 01 a. Of or pertaining to the malleolus; in the region of the malleoli of the ankle joint. 1. Of or pertaining to the malleolus; in the region of the malleoli of the ankle joint.(Anat.)